Katy has been a huge supporter for Hillary. She performed at the Democratic National Convention, where Hillary accepted the party’s nomination as presidential candidate. Katy even dressed up as Hillary for Halloween!

Katy‘s hit song “Roar” has been the theme song for Hillary‘s campaign and is used in her final ad below, which will be aired in the battleground states until the election this upcoming Tuesday (November 8).

“Roar” | Hillary Clinton

10+ pictures inside of Katy Perry and Hillary Clinton on stage in Philadelphia…

“Cuttin’ a rug with all your cats & kittens. Happy Birthday @katyperry #theleastsquarepersonintheroom,” Jes captioned a photo on her Instagram. The party also acted as a celebration of Katy‘s birthday, which fell on October 25.

Katy Perry dresses as Principal Hudson for her retro sock hop Halloween party in these new photos from her Instagram account!

The 32-year-old entertainer shared moments from the party – seemingly a high school dance from the 50s – on her Instagram Stories. Katy‘s beau Orlando Bloom dressed as a high school athlete during the party.

Katy‘s party was complete with cheerleaders, a dance floor, a massive game of twister, a high school cafeteria food buffet, and more.